Startup Of Pump With Air-Cooled Top (Cool-Top ® ) - Grundfos CR 1s Instrucciones De Instalación Y Operación

Startup of pump with air-cooled top (
18.
Do not start the pump until it has been filled with
liquid and vented.
CAUTION
Hot or cold liquid
Minor or moderate personal injury
- Wear personal protective equipment.
- Pay attention to the direction of the vent hole when
you fill the pump with liquid and vent it.
- Make sure that no persons are hurt by the
escaping liquid.
We recommend to connect a drain pipe to the 1/2" air
vent in order to lead the hot water or steam to a safe
place.
Step
1
Open
2
3
Open
4
Cool-Top
Closed
Open
®
)
The air-cooled top should only be started up with cold liquid. Close
the isolating valve on the outlet side and open the isolating valve on
the inlet side of the pump.
Remove the priming plug from the air-cooled chamber (pos. 2) and
slowly fill the chamber with liquid.
When the chamber is completely filled with liquid, replace the priming
plug and tighten securely.
Open the isolating valve on the outlet side of the pump. The valve
may have to be partially closed when the pump is started if there is no
counter pressure (i.e. boiler not up to pressure).
Start the pump and check the direction of rotation.
See the correct direction of rotation of the pump on the motor fan
cover.
If the direction of rotation is wrong, interchange any two of the
incoming power supply leads.
After 3 to 5 minutes, the air vent has been filled with liquid.
During start-up of a cold pump with hot liquid, it is normal
Note
Note
that a few drops of liquid are leaking from the sleeve.
Action
29